- Verified customers concern by performing a vehicle scan and verified code P0304 present. Scanned live data and verified cylinder number for has active misfire. Inspected secondary ignition system and found no visual faults. Tested injector circuits and ignition coil circuits and verified all present within specs. Performed compression test and cylinder leak down test and found no fault on cylinder number four. Removed all spark plugs and found cylinder number three has excessively worn spark plug and oil soaked. Performed compression test and verified compression on cylinder number three is within specs. Found worn secondary ignition system. Recommend performing ignition tuneup including AC Delco assistance spark plugs and premium spark plug wires.
- Performed ignition tune, cleared codes and road tested vehicle with monitoring live data to verify repairs.
David K. gave our service a 5 star review on 8/17/2022